Improvement in oil-guards for shafting-boxes



c. E. Hou.

. Di-Grds'for Shafting-Bnxes. 10.150,419, Patented May 5,1874.

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CHARLES E. HOLT, O F SOMERVILLE, MASSACHUSETTS.

IMPROVEMENT IN OIL-GUARDS FOR SHAFTINGQBOXES.

Specification forming part of Letters Patent No. 150,419, dated May 5,1874 application filed March 4, 1874.

Figure l is an isometrical perspective view' of a box fitted with myimproved guards or retainers. Fig. 2 is a vertical longitudinal sectionof the same. Fig. 3 is a sectional View. Fig. 4 is a plan of thechamber. Fig. 5 is a side elevation of the retainer and its spring.

Like letters refer to like parts in the diiferent figures of thedrawing.

My invention relates more especially to boxes used with shafting runningat a high rate of speed; and consists of a novel construction andarrangement of the parts, as hereinafter more fully set forth-andclaimed7 the object being to furnish a simple and effective means ofpreventing the waste of oil.

The extreme simplicity of my invention renders an elaborate descriptionunnecessary.

In Fig. l, A is the body or bearing of the box, and B B' the guards orretainers, provided on their upper edges with diagonal grooves c c andchutes d d, inwardly inclined, as better seen in Fig. 2. The guards B Bare -each attached to an elliptic spring, f, Fig. 5,

the ends of which rest upon the ledges g g, Figs. 2 and 3, and are keptin position by the pin F and screw E, Figs. l and 3. The body of the boxA is transversely grooved at each end to admit the guards, the groovesopening into the chamber D, as seen in Figs. 2 and 3, which chamber isformed by the cup G, Fig. 4. attached to the lower part of the box A,and

serves to catch and preserve any surplus oil which nds its way betweenthe guards and box into said chamber. The grooves in which the retainersB B are disposed are also provided with short auxiliary grooves a a,Figs. l and 3, into which the pins e e project from the guards, and bywhich and said pins the retainers are prevented from turning with theshaft, as will be clearly obvious.

From the foregoing the nature and operation `of my invention will bereadily understood by all conversant with such matters.

A shaft being mounted in the box A, the Yguards B B will be forceddownward to a level with the-interior surface of the box, the springs facting expansively to keep them constantly in Contact with the shaft. Asthe shaft revolves, the oil taken up will have a tendency to run alongthe shaft beyond the box and thus be wasted, this tendency being greateror less in proportion to the speedl of the shaft. To obviate thisdifficulty Imake use of the guards or retainers B B, which, be ingfitted to conform to the shaft and pressing closely against it, preventthe oil from liowing beyond the box, the grooves c d acting as Scrapersto catch the surplus oil and return -it to the box to be again used.

Having thus described my invention, what I claim is- 1. Inashafting-box, the spring-retainer B, provided with inwardlyinclinedchannels c d, for catching and conducting the oil to the reservoir,constructed and arranged substantially as specified.

2. In a shafting-box, the combination of the retainer B,with itsinclined grooves c d, channel D, and cup C, substantially as and for thepurpose set forth.

CHARLES E. HOLT. Witnesses:

C. A. SHAW, H. E. METCALF.

